Dollaseite-(Ce) Mineral Data

Dollaseite-(Ce) Mineral Data
Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images       News Help About


Masons Minerals
[Thumbnails] [Miniatures] [Cabinets] [About Us] [FAQ]
Welcome To Mason's Minerals
Your Source for Beautiful Minerals and Crystals
We offer a no-questioned-asked Satisfaction Guarantee


General Dollaseite-(Ce) Information

Help on Chemical Formula: Chemical Formula: CaCeMg2AlSi3O11(OH,F)2
Help on Composition: Composition: Molecular Weight = 551.04 gm
   Calcium     7.27 %  Ca   10.18 % CaO
   Cerium     25.43 %  Ce   29.78 % Ce2O3
   Magnesium   8.82 %  Mg   14.63 % MgO
   Aluminum    4.90 %  Al    9.25 % Al2O3
   Silicon    15.29 %  Si   32.71 % SiO2
   Hydrogen    0.27 %  H     2.45 % H2O
   Oxygen     36.29 %  O
   Fluorine    1.72 %  F     1.72 % F
                -   %   F    -0.73 % -O=F2    
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaCeMg2AlSi3O11(OH)1.5F0.5
Help on Environment: Environment: Metamorphic mineral with tremolite, norbergite and calcite.
Help on IMA Status: IMA Status: Approved IMA 1988 - Dana Number Modified from 58.2.1a.6
Help on Locality: Locality: Ostanmossa mine, Norberg district, Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Wayne A. Dollase (1938-?), American mineralogist, University of California at Los Angeles.
Help on Name Pronunciation: Name Pronunciation: Dollaseite-(Ce) + Pronunciation Say DOLLASEITE-(CE)
Help on Synonym: Synonym: ICSD 202605
  Magnesium orthite
  PDF 41-1469
 

Dollaseite-(Ce) Image

Click Here for Larger Dollaseite-(Ce) Image in a New Browser Window Images:
Click Here for Larger Dollaseite-(Ce) Image

Dollaseite-(Ce)

Comments: Glassy brown crystalline grains of dollaseite-(Ce) in matrix.
Location: Ostanmossagruvan, Norberg, Sweden. Scale: Grain size 1 mm.
© Tom Loomis / Dakota Matrix

Dollaseite-(Ce) Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.5616:1:1.7787
Help on Cell Dimensions: Cell Dimensions: a = 8.934, b = 5.721, c = 10.176, Z = 2; beta = 114.31° V = 473.99 Den(Calc)= 3.86
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.915(1), 2.709(0.7), 2.852(0.3),
Click Here for Large Dollaseite-(Ce) Structure Window Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
 Help on Above


Peacor D R , Dunn P J , American Mineralogist , 73 (1988) p.838-842, Dollaseite-(Ce) (Magnesium orthite redefined): Structure refinement and, implications for F + M2+ substitutions in epidote-group minerals, Note: Mg3-x coordinate has been corrected

 

Physical Properties of Dollaseite-(Ce)

Help on Cleavage: Cleavage: {???} Indistinct
Help on Color: Color: Brown.
Help on Diaphaneity: Diaphaneity: Translucent
Help on Hardness: Hardness: 6.5-7 - Pyrite-Quartz
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: light brown
 

Optical Properties of Dollaseite-(Ce)

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.015 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.187,KC= 0.1899
Ncalc = 1.73
Help on Optical Data: Optical Data: Biaxial (?), a=1.715, b=1.718, g=1.733, bire=0.0180
 

Calculated Properties of Dollaseite-(Ce)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.68 gm/cc
note: Specific Gravity of Dollaseite-(Ce) =3.86 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEDollaseite-(Ce) = 124.89 barns/electron
U=PEDollaseite-(Ce) x relectron= 460.17 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 25,889.59 (Gamma Ray American Petroleum Institute Units)
Concentration of Dollaseite-(Ce) per GRapi unit = 38.63 (PPM)

Dollaseite-(Ce) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Radioactivity from Dollaseite-(Ce) - weak
Specimen
Size
Weight/Volume
(Sphere) *		 Calculated
Activity
Bequerols
(Bq)		 Calculated
Activity
Curies (Ci)		 Estimated
Activity
GR(api)		 Estimated
Exposure
(mRem**)/hr
If Held in Hand
For One Hour
1000 gm / 7.91 cm 569,568 1.54E-05 25,889.59 8.51
100 gm / 3.67 cm 56,957 1.54E-06 2,588.96 0.85
10 gm / 1.70 cm 5,696 1.54E-07 258.90 0.09
1 gm / 7.91 mm 570 1.54E-08 25.89 0.01
0.1 gm / 3.67 mm 57 1.54E-09 2.59 0.00
0.01 gm / 1.70 mm 6 1.54E-10 0.26 0.00
0.001 gm / 0.79 mm 1 1.54E-11 0.03 0.00

Weight of pure Dollaseite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.86 gm/cc.*
Goverment Estimate of Average Annual Exposure ( 360 mRem) **
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem
Estimated Thorium Activity ( 1.27 % Th) From Sum REE Elements (25.43 % REE)
 

Dollaseite-(Ce) Classification
Help on Dana Class: Dana Class: 58.02.01d.01 (58)Sorosilicate Insular, Mixed, Single, and Larger Tetrahedral Groups
  (58.02)with cations in [6] and higher coordination; single and double groups (n=1,2)
  (58.02.01d)Epidote group (Dollaseite subgroup)
 
58.02.01d.01 Dollaseite-(Ce) CaCeMg2AlSi3O11(OH,F)2 P 21/m 2/m
 
58.02.01d.02 Khristovite-(Ce) (Ca,REE)(Ce,REE)(Mg,Fe,Cr,Ti,V,Al)MnAl(SiO4)(Si2O7)(OH)(F,O) P 21/m 2/m
Help on Strunz Class: Strunz Class: 09.BG.05c 09 - SILICATES (Germanates)
  09.B - Sorosilicates
  09.BG -Sorosilicates with mixed SiO4 and Si2O7 groups;
 
09.BG.05c Dollaseite-(Ce) CaCeMg2AlSi3O11(OH,F)2 P 21/m 2/m
 
09.BG.05c Khristovite-(Ce) (Ca,REE)(Ce,REE)(Mg,Fe,Cr,Ti,V,Al)MnAl(SiO4)(Si2O7)(OH)(F,O) P 21/m 2/m
 

Other Dollaseite-(Ce) Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.73,p838-842,1988) OPTIC PROP.(Am.Min.,Vol.73,p838-842,1988)
Help on See Also: See Also: Links to other databases for Dollaseite-(Ce) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (UofA)
7 - MinDAT
8 - MinMax(Deutsch)
9 - MinMax(English)
10 - Mineralienatlas (Deutsch)
11 - QUT Mineral Atlas
12 - Ruff.Info
13 - WWW-MINCRYST

Search for Dollaseite-(Ce) using:

Google
 
Web webmineral.com
[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Dollaseite-(Ce) :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

Excalibur Minerals

Exceptional Minerals

Fabre Minerals

Heliodor

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Dollaseite-(Ce) Mineral Data :

Ask about Dollaseite-(Ce) here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espaņol

Print or Cut-and-Paste your Dollaseite-(Ce) Specimen Label here :

Dollaseite-(Ce)

CaCeMg2AlSi3O11(OH,F)2
Dana No: 58.02.01d.01 Strunz No: 09.BG.05c
Locality:

 

Notes: